> I use this tool: http://www.xs4all.nl/~bsamwel/laptop_mode/tools/ > that automagically fires up whenever needed > > $ cat /etc/laptop-mode/batt-start/brightness > #!/bin/sh > echo -n CHOOSE_A_LOW_VALUE > /sys/class/backlight/sony/brightness Also, we need to make hot-key events have similar handling code . For example, Fn+F5 and Fn+F6 are brightness down and up key on my sony laptop. There is a driver called sonypi.c can map Fn+F5/F6 to KEY_FN_F5/F6. But I think It should be mapped to KEY_BRIGHTNESSDOWN/UP (linux/input.h) Although, sonypi.c is NOT so clean, but , if it can report right event to input layer for all sony laptop(it works for me), and all related functions can be controlled through generic sysfs interface, then I would say sony has the best hot-key solution I have even seen so far for linux. Thanks, Luming. - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html